View of silicon disc to be left on moon by Apollo 11 astronauts
Description: Closeup view of the one and one-half inch silicon disc which will be left on the moon by the Apollo 11 astronauts. The disc bears meassages of goodwill from heads of state of many nations. The process used to make this wafer is the same as that used to manufacture integrated circuits for electronic equipment. The Kennedy half-dollar illustrates the relative size of the memorial disc.
